Oil-furnace



2 sheets-sheen 1.

(No Model.)

A. A. HARWOOD. OIL FURNAGB.

No. 383,123. Patented May'ZZ, 1888l INVENTH (No Model.)

2 Sheets-Sheet 2.

A. A. HARWOOD.

OIL FURNACE.

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Patented May 22, 1888.

INVENTOH.

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NITED STATES PATENT FFlCE@ @lL-FURNAC.

SPECIFICATION forming part of Letters Patent No. 383,123, lated May 22. 1888,

l Application filed August 19, 1887. Seal No. 247,327. (No model.)

To @ZZ whom it may concern:

Be it known that I, ALPHRaNzo ANDERSON HARWOOD, a citizen of the United States, residing at McKeesport, county of Allegheny, and State of Pennsylvania, have invented certain new and useful Improvements in Oiltflurnaces, of which the following is a specificaion.

This invention relates to hydrocarbonfurnaces for generating steam in steam-boilers, and has for its object to provide a furnace wherein oil, steam, and heated air are employed to generate the heat in a simple and effective manner; and to this end my invention consists in the improved construction and arrangement of parts hereinafter fully described, and more specilically pointed outin the claims, due reference being had to the ac companying drawings, forming a partof this specification, wherein-- Figure l is a side elevation, partly in section, of my improved device. Fig. 2 is a plan view of the web rand spider for supporting the fire-brick.

Referring to the drawings, the letter A indicates the oil-supply pipe connected to any suitable source of oilsupply and terminates in a contracted nozzle, c.

B indicates an air-pipe surrounding the upper portion ofthe oil-pipe,and also terminating in a contracted nozzle, b, in a direct line with the nozzle c, after the manner ofthe usual and well-known atomizers. The lower end of the air-pipe B is connected with a box, B', also surrounding the oil-pipe A, and said box is connected to an air-pipe, B2, which at its other end connects with an airheating chamber, B3, located directly over the exit of the oil and air pipe,lso as to be in thc pathway of the issuing flame.

Bi indicates an air-supply pipe connected to the air-heating chamber at a point preferably opposite the pipe B2, and leading` outside of the iire-boX to the external atmosphereA C indicates a steampipe connected at one end to the steam-space of the boiler, which is to be heated, and the other end connected to a heating-chamber, D.

o indicates a steam-pipe connected at one end to the heating-chamber D, and at its other end terminates in a nozzle, e, which nozzle communicates with the oil-pipe A, as showm The steampipe c is provided with a valve, c', adapted to control the passage of steam through said pipe, and a similar valve, Z1', is located in the air-pipe B2, for the purpose of controlling the passage of heated air through said pipe.

F indicates an oil-pan adapted to catch and hold any drip from the atomizer, andf the vertical wall thereof, which is provided at its top with a web or spider, f2, and said spider4 is provided upon its under side with lugsfl, which serve to support a tire-brick directly over the atomizer, said fire-brick being provided Vwith grooves or recesses, as shown, in which the lugsf3 lit to hold it in place,s

It will be understood that the parts above described are to be located in the rebox of the steam-boiler in the usual manner.

The operation is as follows: When lire is to be started in the liie-box,oil is allowed to ow through the oil-pipe A, a suitable valve, a2, being located in said oil-pipe to control the passage of the oil therein, and drips into the Oilpauf, where it is ignited. The dame from the oil in the oilpan will in a short time heat the air in the heating-chamber B3, and the hot air will then pass through the pipe B2, and through the box B and air-pipe B, surrounding the Oilpipe, and thence out through the nozzle b. The heated air in its passage through the box B and pipe B will partially vaporize the oil in the pipe A, and the heated air and partiallywaporized oil-will mingle as they issue from the nozzle c b and impinge against the fire-brick in the form of a gaseous vapor, which will be ignited by the llame of the oil in the oilApan. When steam has become geucrated in the boiler, it will pass through the steampipe C to the heating-chamber D, and said chamber D being located in the iire-box in close proximity to the point of combustion the steam will become superheated, and thence pass through the pipes C and c, and willissue from the nozzle e into the oilpipe A, the oil and superheated steam mingling and issuing from the nozzle a, and the heated air, the vaporized oil, and the superheated steam will issue from the nozzle I), and as they emerge from said nozzle the three are thoroughly commingled, the oil being finely comminuted, and the vaporous mass,bei n g effcctuallyoxygenized IOO to maintain a perfect and rapid combustion, Will impinge against the fire-brick and afford a flame giving forth a most intense heat.

Having thus described my invention, what I claim is 1. In a hydrocarboufurnace, the combina` tion, With the oil-pipe A, terminating in a nozzle, a, the air-pipe B, terminating at one end in a nozzle, b, surrounding the nozzle a, and at the other end in a box, B', surrounding the pipe A, said box B' being connected with an air-heating chamber, B3, located directly above the nozzles c and b and having an air-supply,` and the superlieating-chamber D, connected with a steam-supply pipe, G, and a pipe, c,the pipe c terminating in a curved contracted nozzle, e, leading into the oil-pipe A at a point below the box B', substantially as shown and described, and for the purposes specified.

2. In a hydrocarbon-furnace, the combination, with the oil-pipe A, terminating in a nozzle, a, the air-pipe B, terminating at one end in a nozzle, b, surrounding the nozzle a, and at the other end in a box, B', surrounding the pipe A, said box B' being connected with an airAheating chamber, B, located directly above the nozzles a and b and having an airsupply, and the superheating-chamber D,con nected with a steam-supply pipe, G, and a pipe, c.the pipe c terminating in a curved contracted nozzle, e, leading into the air-pipe A at a point below the box B', and the oil-pan F, having vertical Wall j", and spiderfz, the latter provided upon its under side with lugs which support a tire-brick directly over the nozzles a and b, the whole being constructed and arranged substantially in the manner shown, and for the purpose specified.

A. A. HARVOOD. 

